:root{--blue:#1565c0;--blue2:#1e88e5;--sky:#e8f2fd;--ink:#0d2b4e;--mute:#5f7896;--line:#d9e6f5;--r:14px}
*{box-sizing:border-box}
body{margin:0;background:#f4f8fe;color:var(--ink);line-height:1.6;font-family:system-ui,-apple-system,"Segoe UI","Leelawadee UI","Noto Sans Thai",Tahoma,sans-serif;-webkit-tap-highlight-color:transparent}
a{color:var(--blue);text-decoration:none}
img,svg,video{max-width:100%;display:block}
h1,h2,h3{line-height:1.3}
/* แถบบน */
.top{position:sticky;top:0;z-index:20;display:flex;gap:10px;align-items:center;padding:10px 16px;background:#fff;border-bottom:1px solid var(--line)}
.logo{display:flex;gap:6px;align-items:center;font-weight:800;font-size:1.1rem;color:var(--ink);white-space:nowrap}
.logo b{color:var(--blue2)}
.chip{display:inline-block;width:30px;height:30px;line-height:30px;text-align:center;border-radius:9px;background:var(--blue);color:#fff}
#search{flex:1;min-width:0;padding:8px 14px;border:1px solid var(--line);border-radius:99px;background:var(--sky);font:inherit}
.help{font-size:1.4rem}
main{max-width:1200px;margin:0 auto;padding:16px 16px 60px}
/* แบนเนอร์ใหญ่ */
.hero{position:relative;overflow:hidden;border-radius:20px;color:#fff;background:linear-gradient(135deg,var(--c1),var(--c2));min-height:230px}
.hero .art{position:absolute;top:0;right:0;bottom:0;width:65%;max-width:460px;opacity:.3}
.hero .art svg{width:100%;height:100%}
.hero .txt{position:relative;padding:24px;max-width:640px}
.hero h1{margin:8px 0;font-size:clamp(1.35rem,4.5vw,2.3rem)}
.hero p{margin:0 0 14px;opacity:.92}
.hero .bar{max-width:280px;background:rgba(255,255,255,.3)}
@media(min-width:760px){.hero .art{opacity:1}}
.tag{display:inline-block;padding:2px 12px;border-radius:99px;background:rgba(255,255,255,.22);font-size:.85rem}
.chips span{display:inline-block;margin:0 6px 6px 0;padding:2px 10px;border-radius:99px;background:rgba(255,255,255,.2);font-size:.85rem}
/* ปุ่ม / แถบความคืบหน้า */
.btn{display:inline-block;padding:11px 20px;border:0;border-radius:12px;background:var(--blue);color:#fff;font:inherit;font-weight:700;cursor:pointer}
.btn.white{background:#fff;color:var(--blue)}
.btn.ghost{background:var(--sky);color:var(--blue)}
.btn.sm{padding:6px 14px;font-size:.9rem}
.bar{height:6px;margin:6px 0;border-radius:9px;background:rgba(13,43,78,.12);overflow:hidden}
.bar i{display:block;height:100%;background:#22c55e}
/* แถวการ์ดแบบ Netflix */
.row h2{margin:28px 0 10px;font-size:1.15rem}
.cards{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 2px 10px;scrollbar-width:thin}
.cards>.card{flex:0 0 72%;scroll-snap-align:start}
@media(min-width:600px){.cards>.card{flex-basis:42%}}
@media(min-width:900px){.cards{flex-wrap:wrap;overflow:visible}.cards>.card{flex-basis:calc(25% - 9px)}}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.card{display:block;background:#fff;border-radius:var(--r);overflow:hidden;color:var(--ink);box-shadow:0 2px 10px rgba(21,101,192,.1);transition:transform .15s}
.card:hover{transform:translateY(-3px)}
.card .meta{padding:10px 12px}
.card h3{margin:0;font-size:.97rem}
.card small{color:var(--mute)}
.poster{position:relative;padding-top:56.25%;background:linear-gradient(135deg,var(--c1),var(--c2))}
.poster svg,.poster img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover}
.poster .no{position:absolute;left:10px;bottom:-10px;font-size:4rem;font-weight:900;line-height:1;color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.3)}
/* ขั้นตอนในบท */
.back{display:inline-block;margin:0 0 12px;font-weight:700}
.steps{display:grid;gap:10px;margin-top:18px}
@media(min-width:900px){.steps{grid-template-columns:1fr 1fr}}
.step{display:flex;gap:14px;align-items:center;padding:12px;border:1px solid var(--line);border-radius:var(--r);background:#fff;color:var(--ink)}
.step:hover{border-color:var(--blue2)}
.step .ic{flex:none;width:54px;height:54px;line-height:54px;text-align:center;border-radius:12px;background:var(--sky);font-size:1.6rem}
.step small{display:block;color:var(--mute);font-size:.85rem}
.step .go{margin-left:auto;font-size:1.3rem;color:var(--blue2)}
.step.done{background:#f0fdf4;border-color:#bbf7d0}
.step.off{opacity:.45;pointer-events:none}
.pn{display:flex;justify-content:space-between;margin-top:24px}
/* หน้าดูเนื้อหา */
.toolbar{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 16px}
.pages{max-width:900px;margin:0 auto}
.pages img{width:100%;height:auto;margin-bottom:12px;background:#fff;border-radius:6px;box-shadow:0 1px 6px rgba(0,0,0,.1)}
.pg{position:relative;margin-bottom:12px;scroll-margin-top:70px}
.pg img{margin:0}
.pg span{position:absolute;top:8px;right:8px;padding:0 8px;border-radius:9px;background:rgba(13,43,78,.7);color:#fff;font-size:.75rem}
.gallery,.vids{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
figcaption{padding:8px 12px}
.ratio,.yt{position:relative;display:block;width:100%;padding-top:56.25%;border:0;background:#0d2b4e center/cover;cursor:pointer}
.ratio iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:0}
.yt span{position:absolute;top:50%;left:50%;margin:-26px 0 0 -36px;width:72px;height:52px;line-height:52px;border-radius:14px;background:var(--blue);color:#fff;font-size:1.5rem}
video{width:100%;background:#000}
/* วิธีใช้ / QR */
.tip{display:flex;gap:14px;padding:14px;margin-bottom:10px;background:#fff;border:1px solid var(--line);border-radius:var(--r)}
.tip .ic{font-size:2rem}
.tip p{margin:4px 0 0;color:var(--mute)}
.phone{display:flex;gap:16px;align-items:center;margin-top:30px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r)}
.phone svg{flex:none;width:120px;height:120px}
.qrgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:12px}
.qrgrid div{padding:10px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:12px;page-break-inside:avoid}
.qrgrid svg{margin:0 auto}
.foot{margin-top:30px;text-align:center;color:var(--mute);font-size:.85rem}
/* หน้าต่างป๊อปอัป */
.modal{position:fixed;top:0;left:0;right:0;bottom:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:16px;background:rgba(13,43,78,.55)}
.modal[hidden]{display:none}
.box{width:100%;max-width:440px;max-height:92vh;overflow:auto;padding:22px;border-radius:20px;background:#fff;text-align:center}
.box h2{margin-top:0}
.qr svg{width:280px;height:280px;margin:0 auto}
.how{display:inline-block;text-align:left}
.url{font-family:monospace;font-size:.85rem;color:var(--mute);word-break:break-all}
.warn{padding:6px 10px;border-radius:10px;background:#fff6e5;color:#8a5300}
.choice{display:flex;gap:12px;margin:14px 0}
.choice button{flex:1;padding:18px 8px;border:2px solid var(--line);border-radius:14px;background:var(--sky);font:inherit;font-weight:700;cursor:pointer}
.choice span{display:block;font-size:2.4rem}
@media print{.top,.noprint{display:none}body{background:#fff}}